I'm knitting a baby blanket. The pattern is knit 4 rows and the 5th row is a pattern row. I want to double the knit rows to 8 before the pattern row. So there would be 4 ridges instead of 2. So my question is should my pattern row be the 8th or 9th row?

The pattern says - the pattern row (row 5) is worked on right and wrong side rows to keep the blanket square: first the pattern row is worked on the right side row, then 4 rows later it is worked on the wrong side row. I'm now working on the pattern row on the wrong side...I think it is correct, but we'll see. Thanks so much for your help.